A kind of teaching aid puzzle game experience equipment
Technical field
The present invention relates to teaching aid puzzle field, specifically a kind of teaching aid puzzle game experiences equipment.
Background technique
In the number difficult to understand of mathematics, there is a kind of entertaining about teaching aid puzzle to start to inscribe, the concrete operation step of the topic is:
One section " password " is write on a sheet of paper.If you should translate it, the word on figure can be copied squared paper (such as regular script in small characters book,
Grid must be square) on, then according to the box (with same squared paper) of another picture, cut out a part, Gai
Have on the figure of word, at this moment you can read from top to bottom the coherent word of the coldest days of the year end meaning in the square hole cut out, from left to right
Come.Thought is over this nine words, then paper frame is turned 90 ° clockwise, continues to read.It has read and has turned 90 ° again, 36 words are all read
It is over, just understands the meaning of this sentence " password ".
The experiment is fairly simple, and experimental result is also uncomplicated, strong operability.Being done in person by student can better body
The enjoyment of meeting teaching aid puzzle, teaches through lively activities;However, above-mentioned experiment can tightly bring the enjoyment in teaching aid puzzle exploration to student,
Its effect is more single;In consideration of it, the present invention provides one kind, and students experience can not only be allowed to the glamour of teaching aid puzzle, and energy
Enough realize the mechanical equipment for creating glamour.
Summary of the invention
In order to make up for the deficiencies of the prior art, a kind of heretofore described teaching aid puzzle game experiences equipment, can
It participates in student in the enjoyment for cracking teaching aid puzzle, and mechanical structure can be experienced through the invention and create new-create Austria
It is wonderful.
The technical solution adopted by the present invention to solve the technical problems is: a kind of teaching aid puzzle game experience equipment, including
Body frame, embedding code device, aobvious code device and aobvious code block, the aobvious code device are located on front side of body frame, and the aobvious code block is located at master
Frame front and rear sides.
The middle mainboard that the body frame includes bottom plate and is connected in the middle part of bottom plate vertically;
Right part is provided with No.1 orbit determination and No. two orbit determination, the entirety of No.1 orbit determination and No. two orbit determination on front side of the middle mainboard
Structure is " ㄇ " type, and the open end of No.1 orbit determination and No. two orbit determination is towards body frame right, so that embedding code device can be from master
In the slide-in of frame right in mainboard, the section of No.1 orbit determination and No. two orbit determination is T-shape, and No. two orbit determination surround No.1 orbit determination
Outside, No.1 orbit determination inside are formed with No.1 sliding slot, No. two sliding slots are formed between No.1 orbit determination and No. two orbit determination, and No.1 is sliding
The section of slot is " mouth " font, and the section of No. two sliding slots is " convex " font;
The No.1 orbit determination upper surface left part is connected, and there are four cylindrical No.1 magnet;
100 pairs of abaculus sets are uniformly fixed on the middle mainboard trailing flank, each pair of abaculus set is opposite by two
The nested column of arrangement forms, and the nested column section is " Γ " type, and nested post design is that the effect of " Γ " type is easy for more preferably
Fix aobvious code block, so that aobvious code block is not covered rear end face from each abaculus and slide away automatically;
The embedding code device includes carving code plate, runner, rotor plate, rotary column and No. two magnet, and the quarter code plate is whole
For flat cube structure, carves code plate upper and lower ends and be symmetrically arranged with embedding code sliding rail, the quarter code plate can pass through embedding code sliding rail
Slide into No.1 orbit determination No.1 sliding slot in, carve code plate be slidably embedded in one of the effect in No.1 sliding slot be easy for replacing it is different
Carve code plate;100 rectangle password lattice are evenly arranged on the described quarter code plate, are mounted on pressure sensing on each password lattice
Device (not shown), and carve and be also extended with a piece-root grafting line pin end on the right side of code plate, wiring pin end is electrically connected with pressure sensor
It connects, a coding is provided on each password lattice;When needing to carry out the puzzle game, then code plate will be carved manually from body frame right
It pushes in the No.1 sliding slot of No.1 orbit determination, and push to No.1 orbit determination left end for code plate is carved.
The present invention is additionally provided with external master controller, and the special control for controlling aobvious code device work is additionally provided in external master controller
End processed, and external master controller one end is additionally provided with a piece-root grafting line female connector, external master controller is mounted on the bottom plate of body frame, and
External master controller passes through storage battery power supply;When quarter, code plate was located at No.1 orbit determination left end, by the wiring of external master controller
Female connector is connected with the wiring pin end for carving code plate, so that each pressure sensor is electrically connected with external master controller, wiring is female
The design of connector and wiring pin end be so that the replacement for carving code plate does not influence the arrangement of circuit, meanwhile, it is special to control aobvious code and fill
The control terminal for setting work passes through electric wire and is electrically connected with aobvious code device, when work, can pass through Manual press password lattice, the password
The pressure sensor of lattice, which is under pressure, to be acted on and issues signal, and number corresponding to the password lattice is sent to external master control
Device, then worked by external master controller feedback to the special control terminal for controlling aobvious code device work with controlling aobvious code device;
The runner is embedded in No. two sliding slots, so that runner can be slided in No. two sliding slots, during sliding
Runner carries out rotation, and the purpose designed in this way is the frictional force for reducing runner in No. two sliding slots, and the rotor plate is generally
Flat cube structure, rotary column one end and runner are rotatablely connected, and the rotary column other end is fixedly connected with rotor plate corner, to rotate
Plate, which can rotate, takes turns rotation, and 100 rectangle sashes are evenly arranged on the rotor plate, and nine rectangle sashes therein are to engrave
Hollow structure, 100 rectangle sashes of rotor plate and 100 rectangle password lattice for carving code plate are in one-to-one relationship, and are rotated
There are four No. two cylindrical magnet, No. two magnet and No.1 magnet for 100 rectangle sashes, four corner's installations on plate
It is magnetic different;When work, when quarter, code plate was embedded into the No.1 sliding slot leftmost side, it can be transported in No.1 sliding slot by pushing rotor plate
It is dynamic, so that runner, which is located at, carves the code plate lower right corner, rotary motion plate again at this time, so that 100 sashes on rotor plate and carving code plate
On 100 password cases set coincidence, at this point, there is nine password lattice to show in the hollow out sash of rotor plate, this nine
The coding that password lattice are shown is the component part of total password, then by nine password lattice with from left to right, from top to bottom
Sequence successively Manual press once so that the number information of nine password lattice is sent to master controller;Then, then push with
And rotary motion plate, rotor plate is turned 90 ° clockwise, is repeated the above process, 360 ° of corotating, rotor plate and quarter code plate position
Coincidence four times is set, is successively pressed into 36 password lattice altogether.
When quarter, code plate moved to the movable most left part of institute in No.1 orbit determination, four No.1 magnet, which are located at, carves code plate
Four corners;Four No. two magnetic when the password lattice of the rectangle sash of rotor plate and quarter code plate are completely coincident, on rotor plate
Iron is completely coincident with four No.1 magnet on No.1 orbit determination;No.1 electromagnet can mutually be sucked with No. two electromagnet, thus
So that rotor plate, which can be fastened on, carves code front edge of board, convenient for subsequent manual to password when rotor plate and quarter code plate are completely coincident
The pressing of lattice, without manually helping quarter code plate again.
The aobvious code device includes aobvious code lattice body, puts block lattice, rodless cylinder, supporting plate, fortune block screw rod, fortune block motor, spiral shell
Pole socket, mast and electromagnet;The aobvious code lattice body is horizontally set on the middle mainboard front end face below No. two orbit determination from left to right,
Aobvious code lattice body includes nominative body, aobvious word partition, iron powder and glass plate, and nominative body even partition is 30 by the aobvious word partition
A cube shows word lattice, iron powder is placed in each aobvious word lattice, the glass plate is connected in nominative body front end face and closing is each aobvious
Word lattice, each aobvious word lattice are interior for showing each coding in above-mentioned password in order;
The middle mainboard rear end face put block lattice and be horizontally set on aobvious code lattice dead astern from left to right, putting block lattice includes master
Put lattice, put block partition and block plate, it is described put block partition and main will put lattice even partition be that 30 cubes put block side lattice, and
Block side lattice open upper end is respectively put, block side lattice is put for 30 and sets one-to-one correspondence, the block plate with 30 aobvious word cases respectively
It is connected in master and puts lattice rear end face;When work, each aobvious code block can be put into the lattice of block side from block side lattice upper end is respectively put;
The rodless cylinder is connected in vertically at left and right sides of middle mainboard rear, and the supporting plate passes through pair of sliding block water
On rodless cylinder, the fortune block screw rod is mounted on pair of sliding block safety, and fortune block motor is mounted on supporting plate, and is transported
Block electric machine main shaft is connected with fortune block screw rod by shaft coupling, and the screw bolt seat is mounted on fortune block screw rod, and mast level is solid
It is connected on screw bolt seat, and mast front end face is fixed with electromagnet;When work, the control terminal of the aobvious code device work of control receives outer
After the password lattice number signal that portion's master controller issues, aobvious code device work is controlled, rodless cylinder drives pair of sliding block or more
Movement, and then fortune block screw rod and fortune block motor is driven to move up and down, meanwhile, fortune block motor work drives fortune block screw rod rotation, into
And screw bolt seat is driven to carry out side-to-side movement on fortune block screw rod, and then mast is driven integrally to carry out upper and lower and two freedom degrees in left and right
Movement, and aobvious code device passes through the password lattice number signal received and moves to mast at specified aobvious code block.
The aobvious code block generally cube structure, showing code block quantity is 100, after each aobvious embeddable middle mainboard of code block
The abaculus set of side, and each aobvious code block is embeddable puts the putting in the lattice of block side of block lattice, when in aobvious code block insertion nested block, shows code
The electromagnet of device can show code block rear end face and be in contact, and the aobvious code block is irony material;When work, when needing to show certain
Code block is placed into specified when putting in the lattice of block side, then mast is moved to the aobvious code block dead astern, at this point, electromagnet and aobvious code block
Rear end face is in contact, then, the instruction of external electromagnetic relay controlled terminal and work so that electromagnet be powered, thus electromagnetism
Iron generates magnetism to adsorb aobvious code block, then through the upper and lower and side-to-side movement of mast entirety, aobvious code block is transported to and is put
In the lattice of block side, then power off electromagnet, mast carries electromagnet to repeat the aobvious code block of next step and place operation.
The corresponding 100 password lattice for carving code plate of 100 pairs of abaculus set of middle mainboard trailing flank, each aobvious code block rear and front end face
It is provided with coding, and the coding on each aobvious code block is identical as the coding one-to-one correspondence on password lattice;When work, when someone A is pressed
When the password lattice interior coding of pressure is X, the information of the password lattice is fed back to master controller by pressure sensor, and master controller is close by this
The information of code lattice is sent to the control terminal for controlling aobvious code device work, and aobvious code device is started to work after receiving the information of control terminal,
Mast movement is transported to the aobvious code block that front and back two sides is encoded to X puts in the lattice of block side, and be pressed according to different password lattice
Sequentially, the aobvious code block of corresponding coding is successively placed into from left to right and is put in the lattice of block side, show the coding of code block front end face in protrusion
State, and each coding of aobvious code block front end face protrusion is magnetic, thus after certain aobvious code block is put into block side lattice, corresponding position
Aobvious word lattice in iron powder be adsorbed arrangement by magnetic action and by the coding shape of aobvious code block, thus coding can be in aobvious word
It is displayed in lattice, so that a column password from left to right can successively be displayed in aobvious code lattice body, is convenient for observation of students.
Preferably, the coding carved on code plate and aobvious code block is Chinese character, number or Arabic alphabet, thus of the invention
It is widely applicable.
The utility model has the advantages that
A kind of teaching aid puzzle game of the present invention experiences equipment, and students' response can will be allowed to the pleasure of decryption
Interest, and the cryptographic results being cracked can be made to display in order automatically, whole equipment changes tradition and is cracked with computer
And show the mode of password, and by the way of being combined manually with machinery, so that student participates in during password cracking
While, the enjoyment of mechanical profoundness and innovation can be also realized, so that student is higher to the enthusiasm of study.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing.
Fig. 1 is overall schematic of the invention;
Fig. 2 is another visual angle schematic diagram of the invention;
Fig. 3 is front view of the invention;
Fig. 4 is body frame of the present invention and the connection schematic diagram for carving code plate;
Fig. 5 is the A-A sectional view of Fig. 3
Fig. 6 is partial enlarged view at the B of Fig. 5;
Fig. 7 is partial enlarged view at the C of Fig. 5;
Fig. 8 is partial enlarged view at the D of Fig. 5;
In figure: including body frame 1, embedding code device 2, aobvious code device 3, aobvious code block 4, bottom plate 11, middle mainboard 12, No.1 orbit determination
121, No. two orbit determination 122,123, No. two sliding slots 124 of No.1 sliding slot, No.1 magnet 125, abaculus set 126, nested column 127, quarter code
Plate 21, rotor plate 23,24, No. two magnet 25 of rotary column, embedding code sliding rail 211, password lattice 212, aobvious code lattice body 31, puts block at runner 22
Lattice 32, rodless cylinder 33, supporting plate 34, fortune block screw rod 35, fortune block motor 36, screw bolt seat 37, mast 38, electromagnet 39, nominative body
311, show word partition 312, iron powder 313, glass plate 314, aobvious word lattice 315, it is main put lattice 321, put block partition 322, block plate 323,
Put block side lattice 324.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Embodiment is closed, the present invention is further explained.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, a kind of teaching aid puzzle game body of the present invention
Equipment, including body frame 1, embedding code device 2, aobvious code device 3 and aobvious code block 4 are tested, the aobvious code device 3 is located at 1 front side of body frame, institute
The aobvious code block 4 stated is located at 1 front and rear sides of body frame.
The body frame 1 includes bottom plate 11 and the middle mainboard 12 for being connected in 11 middle part of bottom plate vertically;
The 12 front side right part of middle mainboard is provided with No.1 orbit determination 121 and No. two orbit determination 122, No.1 orbit determination 121 and two
The overall structure of number orbit determination 122 is " ㄇ " type, and the open end of No.1 orbit determination 121 and No. two orbit determination 122 is right towards body frame 1
Side, thus embedding code device 2 can be slid into from 1 right of body frame in mainboard 12, the section of No.1 orbit determination 121 and No. two orbit determination 122
It is T-shape, and No. two orbit determination 122 surround 121 outside of No.1 orbit determination, are formed with No.1 sliding slot on the inside of No.1 orbit determination 121
123, No. two sliding slots 124 are formed between No.1 orbit determination 121 and No. two orbit determination 122, and the section of No.1 sliding slot 123 is " mouth " word
Type, the section of No. two sliding slots 124 are " convex " font;
The 121 upper surface left part of No.1 orbit determination is connected, and there are four cylindrical No.1 magnet 125;
Uniformly be fixed with 100 pairs of abaculus set 126 on 12 trailing flank of middle mainboard, each pair of abaculus set 126 by
Two nested columns 127 arranged in opposite directions form, and 127 section of nested column is " Γ " type;
The embedding code device 2 includes carving code plate 21, runner 22, rotor plate 23, rotary column 24 and No. two magnet 25, described
The generally flat cube structure of code plate 21 is carved, 21 upper and lower ends of code plate is carved and is symmetrically arranged with embedding code sliding rail 211, the quarter code
Plate 21 can be slid into the No.1 sliding slot 123 of No.1 orbit determination 121 by embedding code sliding rail 211;It is uniformly arranged on the described quarter code plate 21
There are 100 rectangle password lattice 212, pressure sensor (not shown) is mounted on inside each password lattice 212, and carve code
21 right side of plate is also extended with a piece-root grafting line pin end, and wiring pin end is electrically connected with pressure sensor, is all provided on each password lattice 212
It is equipped with a coding;When needing to carry out the puzzle game, then code plate 21 will be carved manually from 1 right of body frame and pushes to No.1 orbit determination
In 121 No.1 sliding slot 123, and 121 left end of No.1 orbit determination is pushed to by code plate 21 is carved.
The present invention is additionally provided with external master controller, and special control is additionally provided in external master controller and shows what code device 3 worked
Control terminal, and external master controller one end is additionally provided with a piece-root grafting line female connector, external master controller is mounted on the bottom plate 11 of body frame 1
On, and external master controller passes through storage battery power supply;When quarter, code plate 21 was located at No.1 121 left end of orbit determination, by external master control
The wiring female connector of device processed is connected with the wiring pin end for carving code plate, so that each pressure sensor is electrically connected with external master controller
Connect, the design of wiring female connector and wiring pin end be so that the replacement for carving code plate 21 does not influence the arrangement of circuit, meanwhile, specially
It controls the control terminal that aobvious code device 3 works and passes through electric wire and be electrically connected with aobvious code device 3, when work, Manual press can be passed through
Password lattice 212, the pressure sensor of the password lattice 212, which is under pressure, to be acted on and issues signal, by volume corresponding to the password lattice
It number is sent to external master controller, then by external master controller feedback to the special control terminal for controlling aobvious code device 3 and working, with control
Aobvious code device 3 is made to work;
The runner 22 is embedded in No. two sliding slots 124, so that runner 22 can be slided in No. two sliding slots 124, it is sliding
Runner 22 carries out rotation in dynamic process, and the purpose designed in this way is the frictional force for reducing runner 22 in No. two sliding slots 124, institute
The generally flat cube structure of the rotor plate 23 stated, 24 one end of rotary column and runner 22 are rotatablely connected, 24 other end of rotary column with turn
23 corner of movable plate is fixedly connected with, so that rotor plate 23 can be rotated around runner 22, is evenly arranged with 100 on the rotor plate 23
A rectangle sash, nine rectangle sashes therein are engraved structure, 100 rectangle sashes and the quarter code plate 21 of rotor plate 23
100 rectangle password lattice 212 are in one-to-one relationship, and 100 rectangle sashes on rotor plate 23, four corners install
There are four No. two cylindrical magnet 25, No. two magnet 25 are different with the magnetism of No.1 magnet 125;When work, when quarter code plate 21
When being embedded into No.1 123 leftmost side of sliding slot, it can be moved in No.1 sliding slot 123 by pushing rotor plate 23, so that runner 22
In carving 21 lower right corner of code plate, rotary motion plate 23 again at this time, so that 100 sashes on rotor plate 23 and carving on code plate 21
100 212 positions of password lattice are overlapped, at this point, there are nine password lattice 212 to show in the hollow out sash of rotor plate 23, it should
Nine password lattice 212 shown coding be total password component part, then by nine password lattice 212 with from a left side to
The right side, sequence from top to bottom successively Manual press once so that the number information of nine password lattice 212 is sent to master control
Device;Then, it then pushes and rotary motion plate 23, rotor plate 23 is turned 90 ° clockwise, is repeated the above process, corotating
360 °, rotor plate 23 is overlapped four times with 21 position of code plate is carved, and is successively pressed into 36 password lattice 212 altogether.
When quarter, code plate 21 moved to the movable most left part of institute in No.1 orbit determination 121, four No.1 magnet 125 are located at
Carve four corners of code plate 21;When the password lattice 212 of the rectangle sash of rotor plate 23 and quarter code plate 21 are completely coincident, rotation
Four No. two magnet 25 on plate 23 are completely coincident with four No.1 magnet 125 on No.1 orbit determination 121;No.1 electromagnet 125
It can be mutually sucked with No. two electromagnet 25, so that when rotor plate 23 and quarter code plate 21 are completely coincident, 23 energy of rotor plate
It is enough fastened on and carves 21 front end of code plate, the pressing convenient for subsequent manual to password lattice 212, without manually helping quarter code plate again
21。
The aobvious code device 3 include aobvious code lattice body 31, put block lattice 32, rodless cylinder 33, supporting plate 34, fortune block screw rod 35,
Transport block motor 36, screw bolt seat 37, mast 38 and electromagnet 39;The aobvious code lattice body 31 is horizontally set on No. two from left to right to be determined
12 front end face of middle mainboard of 122 lower section of rail, showing code lattice body 31 includes nominative body 311, aobvious word partition 312, iron powder 313 and glass plate
314,311 even partition of nominative body is that 30 cubes show word lattice 315 by the aobvious word partition 312, in each aobvious word lattice 315
It is placed with iron powder 313, the glass plate 314 is connected in 311 front end face of nominative body and each aobvious word lattice 315 of closing, and described is each
For showing each coding in above-mentioned password in order in aobvious word lattice 315;
12 rear end face of middle mainboard put block lattice 32 and be horizontally set on aobvious code lattice dead astern from left to right, puts block lattice 32
It puts lattice 321 including main, put block partition 322 and block plate 323, described to put block partition 322 main to put 321 even partition of lattice be three
Ten cubes put block side lattice 324, and respectively put 324 open upper end of block side lattice, put block side lattice 324 for 30 and show respectively with 30
315 position of word lattice corresponds, and the block plate 323 is connected in master and puts 321 rear end face of lattice;When work, each aobvious code block 4 can be from
324 upper end of block side lattice is respectively put to be put into block side lattice 324;
The rodless cylinder 33 is connected in vertically at left and right sides of middle 12 rear of mainboard, and the supporting plate 34 passes through a pair of sliding
Motion block is horizontally arranged on rodless cylinder 33, and the fortune block screw rod 35 is mounted on pair of sliding block, and fortune block motor 36 is installed
It on supporting plate 34, and transports 36 main shaft of block motor and is connected with fortune block screw rod 35 by shaft coupling, the screw bolt seat 37 is mounted on
It transports on block screw rod 35,38 level of mast is connected on screw bolt seat 37, and 38 front end face of mast is fixed with electromagnet 39;When work,
After controlling the 212 number signal of password lattice that the control terminal that aobvious code device 3 works receives external master controller sending, aobvious code is controlled
Device 3 works, and rodless cylinder 33 drives pair of sliding block to move up and down, and then drives fortune block screw rod 35 and about 36 block motor of fortune
Movement, meanwhile, the fortune work of block motor 36 drives fortune block screw rod 35 to rotate, and then screw bolt seat 37 is driven to carry out on fortune block screw rod 35
Side-to-side movement, and then drive the whole progress of mast 38 up and down and the freedom degree movement of left and right two, and aobvious code device 3 passes through reception
To 212 number signal of password lattice mast is moved at specified aobvious code block 4.
The generally cube structure of aobvious code block 4, showing 4 quantity of code block is 100, each aobvious embeddable middle mainboard of code block 4
The abaculus set 126 of 12 trailing flanks, and each aobvious code block 4 is embeddable puts the putting in block side lattice 324 of block lattice 32, when the insertion of aobvious code block 4
When in nested block, the electromagnet 39 of aobvious code device 3 can show 4 rear end face of code block and be in contact, and the aobvious code block 4 is irony material
Matter;When work, it is placed into specified when putting in block side lattice 324 when needing to show certain code block 4, then mast 38 is moved into the aobvious code
Positive 4 rear of block, at this point, electromagnet 39 is in contact with aobvious 4 rear end face of code block, then, external electromagnetic relay works so that electromagnetism
Iron 39 is powered, so that electromagnet 39 generates magnetism to adsorb aobvious code block 4, then through the upper and lower and left and right that mast 38 is whole
Movement, aobvious code block 4 is transported to and is put in block side lattice 324, then powers off electromagnet 39, and mast 38 carries electromagnet 39 to repeat
The aobvious code block 4 of next step places operation.
The corresponding 100 password lattice 212 for carving code plate 21 of 100 pairs of abaculus set 126 of middle 12 trailing flank of mainboard, each aobvious code block
4 rear and front ends face are provided with coding, and the coding on each aobvious code block 4 is identical as the coding one-to-one correspondence on password lattice 212;Work
When making, when 212 interior coding of password lattice of someone A pressing is X, pressure sensor feeds back to the information of the password lattice 212 always
Controller, the information of the password lattice 212 is sent to by master controller controls the control terminal that aobvious code device 3 works, and aobvious code device 3 connects
It starts to work after receiving the information of control terminal, the movement of mast 38 is transported to the aobvious code block 4 that front and back two sides is encoded to X puts block side lattice
In 324, and the sequence being pressed according to different password lattice 212, the aobvious code block 4 of corresponding coding is successively placed into from left to right and is put
In block side lattice 324, the convex state of coding of 4 front end face of code block is shown, and each coding of aobvious 4 front end face of code block protrusion has magnetic
Property, thus after certain aobvious code block is put into block side lattice, iron powder 313 in the aobvious word lattice 315 of corresponding position by magnetic action and
It is adsorbed arrangement by the coding shape of aobvious code block, so that coding can display in aobvious word lattice, so that a column password can
It is from left to right successively displayed in aobvious code lattice body 31, is convenient for observation of students.
Preferably, the coding carved on code plate 21 and aobvious code block 4 is Chinese character, number or Arabic alphabet, thus this hair
Bright is widely applicable.
The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and only illustrating for the description in above embodiments and description is of the invention
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these change and change
Into all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent
It defines.